JP2000056710A - Light emitting display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To emit the light of a background color on the background of the display of a character or a pattern by providing a background member with light propagating property that incident light is propagated in the surface direction of a background surface and light emitting property that the propagated light is emitted from the surface of a light emitting body in a display direction. SOLUTION: A background board 2 constituting the light emitting display device is made a plate body formed as a rectangle long sideways of transparent or translucent resin material such as acrylic resin. Plural through-holes 2a are bored on the plate surface of the board 2, the light emitting parts 3a of plural light emitting diodes (light emitting body) are properly fixed in the through-holes 2a in an arrayed state so as to draw the character or the pattern. Since the board 2 is a transparent (translucent) body, it has the light propagating property that the incident light is propagated in a plate surface direction, and further its rear surface (back surface) is constituted as an irregular reflection surface 12 irregularly reflecting the light, whereby it has the light emitting property that the propagated light is irregularly reflected and emitted from the front surface of the board.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a light-emitting display device used for advertisement, decoration, or display.

[0002]

2. Description of the Related Art Conventionally, display devices for advertisement, decoration, etc. include a light bulb and a light emitting element (light emitting diode, LE
In some cases, a luminous body such as D) is attached, and in this case, a plurality of luminous bodies are used to appropriately display desired characters, designs, and the like. And in this one,
The display device is appropriately displayed as described above under the background, but the background is, at most, the color applied to the base material itself constituting the display device, and the base material is made of a light-transmitting material such as plastic. It is formed of a material having a sharpness, and illuminates a fluorescent lamp or the like as a light source (backlight) at night or the like.

[0003]

However, some of the above-mentioned prior arts have a poor visual effect because they can only change the color of the background color and cannot change the color. Therefore, as shown in Japanese Patent Application Laid-Open No. 9-6260, an optical path of another color as a background color is provided so as to intersect the optical path of the light emitting diode, and the optical path of the other color is changed to the background color by lighting or blinking. Is proposed. However, this is a change of only one color as a background color, has little changeability, and cannot respond to a request for further changeability, and there is a problem to be solved by the present invention.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has been created with the object of solving these problems. A light-emitting display device configured to be able to appropriately display a pattern or the like, comprising a background member that forms a background surface of the display, and a light incident body that enters light into the background member, and a background member The light-emitting device has a light-propagating property for propagating the incident light in a plane direction of a background surface and a light-emitting property for emitting the propagated light from a surface of the light-emitting body in a display direction. As a result, the background color of the display of characters, designs, and the like can be made to emit light. In this case, the background member may be disposed at a display side position of the light emitting body. In this case, the background member may be arranged at the position of the light emitting body. Further, in this case, the background member may be provided with a through-hole penetrating the luminous body, or set so as to sandwich the luminous body from the direction of the background surface. Further, in these devices, the background member may be a plate-like body, and the light incident body may be set so that light enters from a plate thickness surface of the plate-like body. Still further, in these devices, a plurality of light incident bodies may be provided so as to receive light of a plurality of colors. Further, in these devices, the plurality of light incident bodies may be set to at least three colors of red, green, and blue, and may be set to perform dimming control of each color. Further, in these devices, the luminous body, the background member, the light incident body, and the dimming control unit are regarded as one assembly, and a plurality of the assemblies are arranged and arranged so that the background members are arranged in parallel. Background color can be controlled.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a first embodiment of the present invention will be described with reference to FIGS. In the figure, 1
Is a light emitting display device in which the present invention is implemented, and a background board 2 (corresponding to a background member of the present invention) constituting the light emitting display device 1 is made of a transparent or translucent acrylic resin or polycarbonate. A plurality of through holes 2a are formed in the plate surface of the background board 2, and a plurality of light emitting diodes (light emitting elements) are formed in the through holes 2a. 3) The light emitting portions 3a are fixed in a state where they are appropriately arranged to draw characters and pictures.
Then, power is supplied to the light emitting diodes 3 from a power supply device (not shown), so that the front surface (front surface) of the background board 2 is provided.
It is set so that a display composed of characters and symbols is turned on.

On the other hand, on the side surface of the background board 2, that is, on the thick surface 2 b of the background board, three sets of light incident bodies 4 are disposed facing each other at appropriate intervals in the left-right direction. The body 4 comprises first, second and third optical fiber materials 5, 6, 7
These fiber materials 5, 6, 7 are each made of a generally known optical fiber material. One end faces 5a, 6a, 7a serving as light emitting surfaces of the respective fiber materials 5, 6, 7 are arcs (spherical surfaces).
It is shaped so that the emission angle of light is large,
While this is disposed opposite to the plate thickness surface 2b,
The other end surfaces 5b, 6b, 7b serving as light incident surfaces are first,
Each of the second and third fiber materials 5, 6, 7 is bundled separately, and the bundled other end faces 5b, 6b, 7b have light emitting devices 8, 9, which emit red, green, and blue light, respectively. It is configured such that light from each of the light sources 10 enters. These light emitters (light sources) 8, 9, and 10 are connected to a controller 11, and are set so that the light amount (luminous intensity and brightness) of the corresponding light is controlled by a control command from the controller 11 to emit light. , The light incident surface 5 of each fiber material 5, 6, 7
b, 6b, and 7b receive red light, green light, and blue light, respectively, in a state where light amount control is performed.
The colors a, 6a, and 7a are set so that a composite color of red, green, and blue based on the light amount control is emitted. In the present embodiment, the light amount control by the controller 11 is set so that the adjustment state is variously changed with the passage of time, whereby the light emitting surface 5a,
The color of the light emitted from 6a and 7a is set to change with time.

The background board 2 is transparent (transparent).
Since it is a body, it has a light propagating property of propagating incident (incident) light in the direction of the plate surface, and further has a rear surface (rear surface) formed as a diffuse reflection surface 12 for diffusely reflecting light. It has a light emitting property of diffusing the propagated light and emitting (emitting) light from the front surface of the board. Here the diffuse reflection surface 1
As 2, the board surface itself can be configured to have an uneven shape or a polished glass shape, or a board having such a film or the like attached thereto. In particular, when the rear surface is the irregular reflection surface 12, it is preferable to use a light-impermeable surface (or a reflection surface) so that light is not wastefully emitted from the rear surface. Incidentally, the irregular reflection surface 1 formed on the background board 2
2 may be a front surface instead of a back surface, or may be both surfaces. When the front surface is provided with the diffuse reflection surface 12 to provide light emission, the diffuse reflection surface needs to have light transmittance.

In the embodiment of the present invention configured as described above, the light-emitting display device 1 displays characters and designs by turning on the light-emitting diodes 3, and the background of the display is the background board 2. Changes in response to light emission from In other words, light that enters from the side surface of the background board 2 that becomes the thick surface propagates widely in the board surface direction, and diffusely reflected light exits from the front surface of the board. As a result, the background of the display by the light-emitting diodes 3 changes color, and the high-quality light-emitting display device 1 with a high visual recognition effect can be provided. In addition, in this device, the light incident body 4 for emitting light to the background board 2 uses three primary colors of light, red, blue,
An almost infinite color can be synthesized by adjusting the luminance of each green light by the controller 11, and such a background color can be appropriately changed according to time.
The visibility effect is further enhanced, and the light-emitting display device 1 with a sense of quality can be obtained.

The present invention is, of course, not limited to the first embodiment, and the light incident body is composed of a set of optical fiber materials for transmitting the three primary colors, respectively, as in the first embodiment. Not only the configuration embedded in the background member as
Of course, the light incident body of the background member may be a single optical fiber material, and the light incident surface of the optical fiber material may be configured to emit light synthesized by controlling three primary colors in advance. The number of optical fiber materials disposed opposite to the member can be reduced.

Further, as the background member, a second embodiment shown in FIG. 4 may be used. In other words, in this device, the background board 13 is divided into a plurality of vertically elongated strips 13a, and the light incident body 4 is arranged to face each of the divided strips 13a, and the strips 13a are arranged between the strips 13a. The light emitting diode unit U in which the light emitting diode 3 is fitted to an elongated substrate 14 separately prepared in advance is sandwiched, and the light incident body 4 is provided on each strip 13a. Thus, the background color of the background board 13 is emitted. In the case of such a configuration, the light emitting diode 3 is pre-wired into the base material and can be mounted on the background board 13, so that there is an advantage that the mounting operation is easier than in the first embodiment. On the other hand, a portion where the background color does not emit light (the substrate 14 portion) is formed in a streak shape. Therefore, as in the third embodiment shown in FIG. 5, the background board 15 is formed into a plurality of strips 15, and a plurality of recessed holes 15b are formed at one edge in the left-right direction of each strip 15a. While the other edge is straight,
On the front surface of the substrate 14 of the light emitting diode unit U used in the second embodiment, the adjacent strips 15a are brought into contact with each other in a state where the light emitting diodes 3 are assembled into the concave holes 15b, thereby providing a background of the light emitting diodes 3. It can be easily incorporated into the board 15 and can emit a background color without any gap. Further, it is also possible to use a fourth embodiment shown in FIG.
6 is a strip 16a divided into a vertically elongated strip similar to that of the third embodiment described above, in which semicircular concave holes 16b are formed at both left and right edges of the strip 16a. The light emitting diode 3 of the base material 14 is incorporated between the concave holes 16b of the body 16a. In the case of such a configuration, there is an advantage that the strip-like bodies 16a can be assembled without worrying about the front and back. By the way, in the first, second, third and fourth embodiments, the luminous body is directly incorporated into the hole formed in the background member. For this reason, the light emission of the light emitter and the light emission of the background member are mixed on the background member, and a combined color of these lights is emitted. When the light-emitting body is a light-emitting diode, the light-emission has directivity, so that the light-emission does not mix remarkably. If the cap is covered with the cap incorporated into the hole of the body, it is possible to prevent the light emission of the light emitter from being mixed with the light emission of the background member. On the other hand, when it is desired to mix the light emission of the light emitter with the light emission of the background member, the light emission of each member is mixed by using a high-luminance light source such as a halogen lamp instead of the light emitting diode. Can emit a composite color.

On the other hand, according to the fifth embodiment shown in FIG. 7, a light emitting diode 3 is disposed on a base 17 of a desired size, and one light emitting diode 3 is placed in front of the base 17 at the display side position. A background board 18 is formed, and the light incident body 4 is provided on the background board 18. And the background board 18
Is a light-emitting diode 3 disposed at the rear of the background board 18 in which at least one of the front and rear surfaces is formed as a diffusely reflecting surface and the four peripheral surfaces are formed as light-impermeable surfaces.
Is displayed through the background board 18 so as to emit light.
Will be displayed as a composite color with the emission color of. Further, the configuration may be the same as that of the sixth embodiment shown in FIG. In this device, the display device configured as in the first or fifth embodiment is used as one assembly 19, and a plurality of these assemblies 19 are arranged such that the background boards 19a of each assembly 19 are arranged in parallel. The light incident body 4 disposed opposite to each of the background boards 19a is individually controlled, so that the color of light and the lighting time are different from each other to improve the variety of display. it can.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a light emitting display device.

FIGS. 2A and 2B are a partial schematic front view of a display unit and an explanatory diagram for explaining a control state of a light incident body.

FIG. 3 is a partial side sectional view of a display unit.

FIG. 4 is a partial schematic front view of a display unit according to a second embodiment.

FIG. 5 is a partial schematic front view of a display unit showing a third embodiment.

FIG. 6 is a partial schematic front view of a display unit according to a fourth embodiment.

FIG. 7 is a partial schematic front view of a display unit according to a fifth embodiment.

FIG. 8 is a partial schematic front view of a display unit according to a fifth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Light-emitting display device 2 Background board 3 Light-emitting diode 4 Light-incident body 5 First optical fiber material 8 Light-emitting device 11 Controller 12 Diffuse reflection surface

Claims (8)

[Claims] 1. A character using a luminous body serving as a luminous source of light,
A light-emitting display device configured to be able to appropriately display a pattern or the like, comprising a background member that forms a background surface of the display, and a light incident body that enters light into the background member, and a background member A light-emitting display device comprising: a light-propagating property for propagating the incident light in a plane direction of a background surface; and a light-emitting property for emitting the propagated light from a surface of the light-emitting body in a display direction. 2. The light emitting display device according to claim 1, wherein the background member is disposed at a display side position of the light emitting body. 3. The light-emitting display device according to claim 1, wherein the background member is disposed at a position of the light-emitting body. 4. The light-emitting display device according to claim 3, wherein the background member is provided with a through-hole penetrating the light-emitting body, or is set so as to sandwich the light-emitting body from the direction of the background surface. 5. The light-emitting display device according to claim 1, wherein the background member is a plate-like body, and the light-incident body is set so that light enters from a plate-thick surface of the plate-like body. . 6. The light-emitting display device according to claim 1, wherein a plurality of light incident bodies are provided so as to receive light of a plurality of colors. 7. The light incident body according to claim 5, wherein:
A light-emitting display device that is set to at least three colors of red, green, and blue, and is set to perform dimming control for each color. 8. The light emitting device according to claim 1, 2, 3, 4, 5, or 6, wherein the light emitting body, the background member, the light incident body, and the dimming control unit are one assembly, and the plurality of assemblies are arranged in parallel with the background member. A light emitting display device in which the background color is controlled for each background member.